One of the reddest of all red-leaf lettuces, you will surely want to replace Galactic or Redina in your mesclun with Showdown. MI, Pellets:
A dual-purpose baby leaf lettuce that can be used as Red Leaf or Red Romaine in
spring mix salads. It was derived from a red leaf pedigree but its baby leaves have a
romaine-like shape. It produces deep wine-red leaves with serrated margins and
remarkably thick texture. DMR I-VIII / Bl 16-31. (U.S. Patent No. 8,481,818)
"MI" means Mosaic Indexed - zero cases of Mosaic virus found in 30,000 plants.